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Composite oxygen carrier as well as preparation method and application thereof to gasification of solid fuel

A technology of solid fuel and oxygen carrier, applied in the direction of fuel, fuel additive, hydrogen separation using solid contact, etc., can solve the problem of difficult coal high conversion rate absorption, etc., achieve low cost, good anti-wear performance, anti-sintering ability strong effect

Active Publication Date: 2017-08-18
DALIAN UNIV OF TECH
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Problems solved by technology

The patent "A Method and Device for Synthetic Gas Preparation from Coal Particles / Oxygen Carrier Chemical Chain" discloses a method using CaSO 4 / CaS and CaCO 3 / CaO double chemical chain to produce clean syngas and complete CO at the same time 2 However, due to the different temperature requirements of the coal gasification process and the CaO carbonation process, it is difficult for this patent to simultaneously achieve a high conversion rate of coal and CO 2 complete absorption of

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  • Composite oxygen carrier as well as preparation method and application thereof to gasification of solid fuel

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[0028] The fresh olivine was crushed and sieved to a particle size of 0.38-0.83mm, and placed in a muffle furnace at 900°C for 4h. Then place it in the configured saturated Cu(NO 3 ) 2 The solution was immersed in an equal volume method for 24 hours, and then placed in a muffle furnace for calcination at 900°C for 4 hours to obtain the olivine copper-carrying oxygen carrier required for this experiment.

[0029] In such figure 1 In the gasification experiment device shown, the gasification of coal char is performed. The raw material enters from the feed port on the fuel reactor 1, mixes with the high-temperature oxidized oxygen carrier from the first gas-solid separator 3, and undergoes gasification reaction under the action of the water vapor introduced at the same time. The main components are H 2 , CO, and CO 2 The mixed gas. The residual fuel and the oxygen carrier after the reaction enter the air reactor 2 and are ascended by the action of hot air. In this process, the com...

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Abstract

The invention provides a composite oxygen carrier as well as a preparation method and application thereof to the gasification of a solid fuel, and belongs to the technical field of energy chemical industry. The composite oxygen carrier is olivine loaded by copper oxide; the copper oxide accounts for 5 to 30 percent of the mass of the olivine. According to the method, an oxygen carrier is utilized for circularly transferring oxygen and heat; an absorbent is utilized for circularly removing carbon dioxide and carrying out desulfurization; meanwhile, the gasification of a raw material and the purification of a produced gas are realized. In addition, a calcination reactor and an air reactor are connected in series; the heat generated by the oxidation regeneration of the oxygen carrier / the combustion of a residual fuel can be used for realizing the calcination regeneration of the absorbent. The made oxygen carrier has the advantages of being low in cost, high in activity, good in abrasion resistance, high in cyclical stability and high in anti-sintering capacity; the gasification of the raw material and the purification of the produced gas are realized at the same time through a double circulation device; the structure is simple; the control is easy; the utilization rate of energy is high; the quality of the produced gas is good; the environmental pollution is little.

Description

Technical field [0001] The invention belongs to the technical field of energy and chemical industry, relates to a composite oxygen carrier, a preparation method and its application in solid fuel gasification, and specifically relates to a composite oxygen carrier, preparation and use of the oxygen carrier to realize carbon-containing solid fuel Gasification method for preparing clean syngas. Background technique [0002] The gasification of carbon-containing solid raw materials is an effective clean energy utilization technology. Coal, biomass, solid waste, etc. can be partially oxidized to form synthesis gas (CO / H 2 ), used for downstream combustion power generation, synthetic chemicals and liquid fuels. Traditional coal gasification technology mainly uses pure oxygen / oxygen-enriched air as the gasification medium, so a separate air separation unit is required, which greatly increases cost and energy consumption. The concept of chemical looping (ChemicalLooping) provides a new...

Claims

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Application Information

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IPC IPC(8): C10L10/00C01B3/56
CPCC01B3/56C10L10/00C10L2200/0254C10L2200/029C10L2290/04
Inventor 徐绍平宋洋博
Owner DALIAN UNIV OF TECH
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